systemd-id128 systemd systemd-id128 1 systemd-id128 Generate and print sd-128 identifiers systemd-id128 OPTIONS new systemd-id128 OPTIONS machine-id systemd-id128 OPTIONS boot-id systemd-id128 OPTIONS invocation-id Description id128 may be used to conveniently print sd-id1283 UUIDs. What identifier is printed depends on the specific verb. With new, a new random identifier will be generated. With machine-id, the identifier of the current machine will be printed. See machine-id5. With boot-id, the identifier of the current boot will be printed. Both machine-id and boot-id may be combined with the switch to generate application-specific IDs. See sd_id128_get_machine3 for the discussion when this is useful. With invocation-id, the identifier of the current service invocation will be printed. This is available in systemd services. See systemd.exec5. Options The following options are understood: Generate output as programming language snippets. With this option, an identifier that is the result of hashing the application identifier app-id and the machine identifier will be printed. The app-id argument must be a valid sd-id128 string identifying the application. Generate output as an UUID formatted in the "canonical representation", with five groups of digits separated by hyphens. See the wikipedia for more discussion. Exit status On success, 0 is returned, a non-zero failure code otherwise. See Also systemd1, sd-id1283, sd_id128_get_machine3